Blog

A sealed balloon is taken from sea level up to an altitude where the outside pressure is half of what it was, at the same temperature. What happens to its volume?

A helium balloon released outdoors rises, expands, and eventually stops climbing. What stopped it?

A tire gauge reads zero on a completely flat tire. What does that tell you about what a gauge measures?

In a pipe that narrows, what happens to the fluid and to its streamlines?

The pressure a liquid exerts at a given point depends on which two things?

A rock of volume 0.0080 [m3] is fully submerged in fresh water. What is the buoyant force on it?

A statue weighs 250 [N] in air, and the buoyant force on it when submerged in fresh water is 100 [N]. What will a scale read while it is under water?

A hydraulic piston pushes with 250 [N] over an area of 0.0050 [m2]. What is the pressure?

A hydraulic press turns a small force into a large one. Which earlier idea sets the price?

Boyle’s law relates the pressure and volume of a fixed amount of gas at constant temperature. What is the relationship?